Lancer Audio produces a high-end DVD player that sells for $1,300.Total operating expenses for the past 12 months are as follows:

Required
a. Use regression analysis to estimate fixed and variable costs. Round to two decimal places.
b. Compare your estimates to those obtained using account analysis (Problem 4-2) and the high-low method (Problem 4-3). Which method provides the best estimates of fixed and variable costs? (Round all answers to the nearest dollar.)

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Units Produced and Sold 165 130 150 145 155 170 140 150 145 150 140 135 Cost $140,345 August September October November December January February March April May June 116,990 130,650 127,670 133,790 143,910 123,520 130,950 127,385 129,865 122,720 120,255 Ul